Soviet oil derricks in Caspian Sea and map animation showing Nazi German advance and Soviet repulsion during World War I

The video discusses the Caspian region's annual production, which amounts to 30 million tons.

What is the annual production yield of the Caspian Sea?

• 30 million tons

• 25 million tons

• 20 million tons

• 35 million tons

Which body of water is known for yielding 30 million tons annually?

• Red Sea

• Mediterranean Sea

• Black Sea

• Caspian Sea

How many tons does the Caspian Sea produce each year?

• 40 million tons

• 20 million tons

• 10 million tons

• 30 million tons

The Caspian Sea's annual yield is closest to which of the following figures?

• 30 million tons

• 60 million tons

• 15 million tons

• 45 million tons

Which of the following is the correct annual yield of the Caspian Sea?

• 25 million tons

• 30 million tons

• 35 million tons

• 40 million tons